Journal of the Illuminating Engineering Institute of Japan
Online ISSN : 2185-1506
Print ISSN : 0019-2341
ISSN-L : 0019-2341
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Volume 10, Issue 2
Displaying 1-5 of 5 articles from this issue
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  • On the Electric Heating Apparatus
    R. Ishikawa
    1926 Volume 10 Issue 2 Pages 45-59
    Published: February 01, 1926
    Released on J-STAGE: March 02, 2011
    DOIhttps://doi.org/10.2150/jieij1917.10.2_45
    JOURNAL FREE ACCESS
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    This adress contains following three articles,
    1, This paper presents enthusiastically the importancee of the thermiio Lat relay in use of electric-kotats, elec.-futon etc., as the heat conservatoire and shows the important points of its construction and test results of some improved types.
    2. The author measured the inner temperature of elec.-iron and denoted the inclination of further development in near future.
    3. Then he explained fully what is the efficiency of elec.-iron and this technical meaning, expressing his desire to determine the standard specification of efficiency.
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  • Disussion on Mr.R.Ishikawa's
    1926 Volume 10 Issue 2 Pages 58-59
    Published: February 01, 1926
    Released on J-STAGE: October 27, 2010
    DOIhttps://doi.org/10.2150/jieij1917.10.2_58
    JOURNAL FREE ACCESS
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  • Luminous Intensities and Lighting Costs of several Illuminants
    S. Seki
    1926 Volume 10 Issue 2 Pages 60-68
    Published: February 01, 1926
    Released on J-STAGE: October 27, 2010
    DOIhttps://doi.org/10.2150/jieij1917.10.2_60
    JOURNAL FREE ACCESS
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    An investigation on the light given out by several illuminants such as candles, “choichin”, acetylene lamps, petroleum lamps, oil lamps, “anclon”, coal gas lamps, matches and electric lamps, was conducted as to the intensity, light distribution and lighting costs.
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  • One Type of Isocandles
    Ziro Yamauti
    1926 Volume 10 Issue 2 Pages 69-73
    Published: February 01, 1926
    Released on J-STAGE: June 08, 2011
    DOIhttps://doi.org/10.2150/jieij1917.10.2_69
    JOURNAL FREE ACCESS
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    “Isocandles” proposed by Benford is very interesting, but in order to choose a certain horizontal angle, we can not get it directly.
    In this paper, another type of isocandles is prsented. The web consists of concentric circles and radial lines. The former represent the vertical angles θ and the latter the horizontal ones φ. The radius of the circle has the length of √2 R sin θ/2 where R is the largest radius. The scale of θ is practically uniform. The horizontal angles have their actual values.
    This type of isocandles has the following advantages, (1) it represents the actual horizontal angles, and (2) it enable us to get the total hemispherical lumens, though it is inferior to that of Benford to see the features in both hemispheres at a time.
    The loci of the great circles are also shown. The tables given by Benford can be used effectively.
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  • Abstract of Current
    1926 Volume 10 Issue 2 Pages ex25-ex46
    Published: February 01, 1926
    Released on J-STAGE: October 27, 2010
    DOIhttps://doi.org/10.2150/jieij1917.10.2_ex25
    JOURNAL FREE ACCESS
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